A walk or dance- like movement performed by an intoxicated college student, or any other mentally unstable individual, while attempting to urinate on his peers. The stream of urine and hand position forces the perpetrator to walk in a slow, deliberate pace, usually one leg at a time, to avoid showering themselves. With the exception of the hand positioning, this lumbering motion closely resembles the walk of the legendary monster, Frankenstein.
-Dude, I so did the Frankenpiss on that man last night!
-If she was any uglier, I'd have to Frankenpiss that ho.